The victim, Nicholas Troxell, of Philadelphia, suffered a gunshot wound to the head around 12:30 a.m. and was rushed to Temple University Hospital, where he died of his injuries.

SEPTA Police said Troxell was the only person on the train when his body was found.

A group of four or five people were believed to have left the subway after the shooting, investigators said at the time of the incident. After reviewing surveillance footage and conducting an investigation, police identified Banks as a suspect and later charged him.